# egg  = 1
# print(f"{egg} if you father")

def is_valid_zip(zip_code):
    """Returns whether the input string is a valid (5 digit) zip code
    """
    pass
    if len(zip_code) != 5:
        return False
    for num in zip_code:
        if type(num) != type(1):
            return False
    return True
is_valid_zip(12345)